doc: Work with sphinx 1.2.3
travis: Install latest version of sphinx
Update NIS elements viewer software link
Merge pull request #1338 from hflynn/rebased/dev_5_0/nis-elements

Update NIS elements viewer software link (rebased onto dev_5_0)
Merge pull request #1333 from rleigh-dundee/sphinx-tabularycol-dev50

doc: Work with sphinx 1.2.3 (dev_5_0)
Update auto-generated documentation

Repository: openmicroscopy/bioformats
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Generated by BIOFORMATS-5.0-latest-docs-autogen#281 (http://ci.openmicroscopy.org/job/BIOFORMATS-5.0-latest-docs-autogen/281/)